一旦尘埃落定，贝克就为自己的决定进行了辩护。
如果它撞上了地球，就会砸出一个100英里宽的大坑并扬起巨大的尘埃云团。
If it had hit the Earth, it would have made a crater 100 miles across and thrown up an immense cloud of dust.
当尘埃落定，太空梦想者们就输了。
我想，我们最终会成为尘埃。
天使和梦想都染上尘埃。
一切都会变回尘埃。
它是一团尘埃。
SPA盆地底部的尘埃确实蕴含着一个引人入胜的故事。
The dust at the bottom of the SPA Basin really does have a fascinating story to tell.
它们与来自彗星的尘埃颗粒结合在一起，形成了巨大的云团。
They combine with dust particles from the comet to form a huge cloud.
当彗星靠近太阳时，它的冰层融化，释放的气体和尘埃飘向太空。
As the comet nears the sun, its ice melts, releasing gas and dust that stream away into space.
这种想法是错误的，因为当尘埃落定时，人们还会是他们以前的样子。
That kind of thinking is a mistake, because when the dust settles, people are going to be pretty much what they are.
相反，它们之所以是黑暗的，是因为星际尘埃将恒星隐藏在它的后面。
Rather, they are dark because of interstellar dust that hides the stars behind it.
行星被认为是由围绕恒星旋转的气体和尘埃组成的圆盘中的粒子累积而成。
Planets are believed to emerge from the accretion of particles in a disk of gas and dust as they whirl around the star.
光学天文学受到最直接的影响，因为虽然星际气体是完全透明的，但尘埃却不是。
Optical astronomy is most directly affected, for although interstellar gas is perfectly transparent, the dust is not.
根据一种假设，这颗行星的重力场会对由尘埃和气体组成的原行星盘产生牵引力。
According to one hypothesis, the planet's gravitational field tugs on the protoplanetary disk of dust and gas from which it formed.
美国和越南都不希望这些孩子被称为美亚混血儿，并普遍被越南人斥为“尘埃之子”。
Neither America nor Vietnam wanted the kids known as Amerasians and commonly dismissed by the Vietnamese as "children of the dust".
曾经有人认为，这些基质颗粒可能是原始的星云尘埃，即形成陨石球粒及其内含物的物质。
At one time it was thought that these matrix grains might be pristine nebular dust, the sort of stuff from which chondrules and inclusions were made.
这些冰芯将气体、尘埃和其他化学物质封存在格陵兰岛数千年来的积雪中，然后被压缩成冰。
Such ice cores trap gases, bits of dust, and other chemicals that were present in the snow that fell over Greenland for thousands of years and then became compressed into ice.
据推测，所有行星都是由尘埃和气体组成的原始云团凝聚而成，其组成与木星的组成有些相似。
It is hypothesized that the primordial cloud of dust and gas from which all the planets are thought to have condensed had a composition somewhat similar to that of Jupiter.
尽管它的视觉效果如此显著，但尘埃只是位于恒星之间的物质的一个次要组成部分，其密度极低。
Although its visual effect is so pronounced, dust is only a minor constituent of the material, extremely low in density, that lies between the stars.
云是由海洋中的水分被太阳加热蒸发而形成的，这些水分上升到大气中，凝结成微小的水滴，附着于微小的尘埃颗粒。
Clouds are formed from the evaporation of the oceans' water that is warmed by the Sun and rises high into the atmosphere, condensing in tiny droplets on minute particles of dust.
这些微小的尘埃可深深地吸入肺部。
宇航服还能保护他们免受有害辐射和快速移动的太空尘埃的伤害。
The suit also protects them from harmful radiation and fast-moving space dust.
再过多久它们也将和煤气路灯与每天早晨送到家的牛奶一样，步入历史的尘埃？
How long until they go the way of gas street lamps and morning milk deliveries?
与月球上相同，那些巨大陨石坑的范围（例如，那些巨大到自形成后尚未被尘埃填满的陨石坑）标志着火星表面的年龄。
As on the Moon, the extent of large impact cratering (i.e. craters too big to have been filled in by erosion since they were formed) serves as an age indicator for the Martian surface.
这次爆炸将大约100万亿吨的尘埃提升到大气中，这一数字可以通过测量这些尘埃降落到地表时所形成的沉积层的厚度来确定。
The explosion lifted about 100 trillion tons of dust into the atmosphere, as can be determined by measuring the thickness of the sediment layer formed when this dust settled to the surface.
雨将使尘埃平息。
开过去的那辆车扬起滚滚尘埃。
但是尘埃本身又是如何形成的呢？
但是尘埃本身又是如何形成的呢？
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